Tuesday, the medical examiner testified McMillan died from internal bleeding, caused when a bullet tore through his shoulder, through his lung and exited his side.

Jurors saw surveillance video of a masked man holding a gun first to McMillan's mother-in-law and then aiming it at McMillan, who was putting cash in a bag for the robber.

McMillan lunged at the gunman's arm and was shot.

During questioning, Graham allegedly confessed to his father that he targeted McMillan -- an avid fisherman who often donated to the needy community -- "for the money" and shot him because he lunged for the gun.